Apparatus and process for sensing fluoro species in...

Measuring and testing – Gas analysis – Detector detail

Reexamination Certificate

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C073S023200, C073S025010

Reexamination Certificate

active

07080545

ABSTRACT:
A gas detector and process for detecting a fluorine-containing species in a gas containing same, e.g., an effluent of a semiconductor processing tool undergoing etch cleaning with HF, NF3, etc. The detector in a preferred structural arrangement employs a microelectromechanical system (MEMS)-based device structure and/or a free-standing metal element that functions as a sensing component and optionally as a heat source when elevated temperature sensing is required. The free-standing metal element can be fabricated directly onto a standard chip carrier/device package so that the package becomes a platform of the detector.

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